Radiator



3 Sheets-Sheet l RADIATOR T. E; MURRAY. JR

Filed July 16.

July 2s, y1931.

Inventor; ,7/'1'OMHJMR 4i/J (A tomey 1 July 28, 1931. T. E. MURRAY, JR 1,815,607

' RADIATOR Filed July 1e. 1929 :s sheets-sheet 2 Inventor Julyzs, 1931.

T. E. MURRAY, JR l RAD IATOR Filed July 16. 1929 3 Sheets-Sheet 3 n ven for flic/1745i." M/mv/l/q/'.

Attorneys Paten-ted .uly 28, 1931 PATIENT Prie THOMAS E. MURRAY, JR., OF BROOKLYN, NEW YORK, ASSIGNOR TO MURRAY RADIATOR CORPORATION, A CORPORATION F NEW YORK RADIATOR Application led July 16,

a cert/ain improved radiator vandv method of production. Tliepresent application is continuation iii'part of No. 210,959, covering the radiators and showing also certain modifications; the earlier application is limited to claims for the method of production. Ap-

i0 paratuses of this sort are used generally for heating the air of a room, or they'may' be used for cooling the air by circulating cold brine or the like through them.

The accompanying drawings illustrate embcdimen-ts'of the invention.

Fignl is a plan and Fig. 2 an elevation of a radiator;

Figs. 3- and 4 are horizontal sections through a tube and a joint respectively;

Fig. 5 is al vertical transverse section;

Fig. 6 is a section similar to Fig. 4 illustrating a modification;

Figs. 7 and 8 are similar sections illustrating successive stages in the production of an alternative design;

Figs; 9 and 10 are modicationsof Figs. 6 and 8 respectively;

Fig.' 11 isa view similar to-Fig. 3 showing amodification;

Fig; 12 isa view similar to Fig. 8 showing amodifica-tion `thereof Fig; 13 is a perspective viewl showinga further modification; j

Fig; 14 is a horizontal section of still anothermodification. f j

The heating elementV is a tube 1 for conveyingste'am or other heating medi-um, preferably made of thin copper or aluminum for high conductivity.

Applied to one or, preferably to both of the opposite sides orV the-'pipe are extended area structures, preferably also of thin sheet copper oraluininum, corrugated in the manner shown. The extended. area structure at each side may be made of a single sheet extending thelength of the radiator or of two or more sectionsv making up the total lengthi The inward corrugations have vertical longitudinal portions 2 which are bent out at intervals to formy recessed portions Sembracing the 1929. Serial No. 378,653.

pipes 1. At both sides of the portion 2 the sheet extends outward in portions 4 which diverge until they reach the outer sides ofthe tube 1. Each outward corrugation comprises what we may call an inner segment composed of two transverse portions 4, and

an outer segment which is widely rounded at both sides 5 and projecting in the longitudinal direction beyond the intermediate con- Y necting portions 6. Thus the transverse por'- tions of each outward corrugation converge towards the heating element to about the point of enga gement therewith and then diverge to the edges of the inner longitudinal portion 2.

This shape has certain advantages which will be appreciated by comparison with the shape shown for example in Phelps Patent No. 1,716,459 J une 11, 1929, and employing the same quantity of sheet metal and the same area. Instead of rather narrow and angular vertical lues and passages, the new shape presents widely rounded spares which permit an easier flow of' air through them. The complete width of the radiator is materially reduced.

In the particular case illustrated, there is a reduction of about twenty-tive per cent in the floor space occupied by the radiator. In the new shape, each of the corrugati-ons is sti'er. The rounded sides 5 projecting beyond the connecting portion 6 projeft thel latterfrcm accidental blows and deformation. The appearance of the complete radiator is also considerably improved.

The corrugated sheets may be applied to the steam pipe or other heating element by. any usual or suitable means. According to the drawing, straps 8, preferably of steel, are provided with recessed portions 9 embracing the portions 3 of the sheetsl and clamping. them together about the pipe 1; the opposite straps being united above and below the tubes by Welds 10 passing through the portions 2 of the sheets. lf wecall the space 11i within the outward corrugations inside fines and the spaces 12 outside flues, it willbeobserved that the diverging parts l5 of the sheet' serve to substantially or approximately close lee these outside flues and thus to increase they may be introduced by assembling the parts I While the sheets are shaped with wider spaces between the outward corrugations, asV with the shape in Fig. 7, and Subsequently reshaping the sheets.

The spaces at the outer side of the outside tlues may be further narrowed by bringing the sides closer together. In Fig. 6, for example, the sides 5 are brought nearly together across the outside fines 12. They may be brought into actual contact, though this Would not substantially change the effect as compared with the leaving of a narrow slit. See), Fig. 9. s

In Fig. 8 the c: f a somewhat different shape. The sheets are applied to the tube 1 in the form shown in Fig. 7 with sides having parallel portions 13 and outwardly converging portions 14 connected at their edges by a channel-shaped portion 15. kAft r assembling the parts in this shape the eorrugationeI are reshape-d by bending them inward as shown in Fig. S. This leaves each of the inside flues 11 bounded by a protecting rib 15Hv ou the outside with diverging outer walls 1li and converging inner walls 13, formed from the parts 15, 14 and 13 respectively.

The ribs 15a serve the saine purposev of protecting the face of the radiator from acvcidental injury which is served by the protecting portions o of Figs. it and G.

The outside flues 12 are bounded by sid-es ltwhieh at their outer edges substantially or approximately close the ilues (or may be shaped to entirely close them as at 14h, Fig. This shape has functions similar to those of Figs. and G. The inside flues 11 constitute wide spaces at the sides of the tube 1 through which. spaces the heated air flows freely. The spaces between these wide inside flues bear a comparatively small ratio to the spaces within the inside flues; and these intermediate spaces 12 are also substantially closed so as to .onstitute ilues in which a better draft maintained than would be the case with open channels.

Various other kinds of heating element may be used. For example, the tube may be flat` tened transversely to occupy less width, or may be a single narrow chamber instead of the successive lengths of tubing illustrated. Or it may be an electric. heater; of the strip type, for example.

Preferably the extended area structure is united to the heating element, by the welded straps illustrated or in other ways, before re` shaping it, though the re-shaping can be effected after the parts are assembled and before they are actually united. And it will be understood that the extended area structure are shown ofv may be applied to only one side of the heating element as described in certain of'said prior applications, though for most uses the radiator Will include two such structures applied to opposite sides of the heating element.

0r the radiator may be provided with two different designs of extended area structure, one at each side, as in Figs. 11, 12, 13 and 14. Generally, though not necessarily, the deeper and narrower corrngations shown at the up# per sides of these figures will be used as the back of the radiator; referring to the hori- Zontal dimension from the center of the pipe to the outer wall of the corrugations as their depth, and referring to the dimension of the corrugations parallel to the length of the pipe as their width. By having :the widerV individual corrugations at the exposed front we produce a smoother and more attractive appearance and we also secure a better protection from accidental injury as explained above.V The deeper and comparatively narrow eorrugations at the back -permit an easier and more voluminous flow of air and thus facilitate the circulation of the air in the room. l

The shallower corrugations also may be placed at the. back with advantage where economy of space is desired there. In any case it will be observed that there is a considerable economy of space in arranging a given area of sheet metal with the comparatively fiat corrugations at one side, although such economy is naturally greater with the flattened corrugations at both sides.

In the cases illustrated, the saine area is provided by the corrugatedmetal at both sides. But they may differ in this respect, and various other designs may be used to secure the same function Vor functions.

According to Fig. 11, the front sheet is bent to form parts 5 and 6 and to include flues 11 and 12 the same as in'Fig. 3. At the other side however, the sheet is bent to formv transverse plates 16 connected by outer longi tudinal plates 17, enclosing vertical fiues 18 which are Vclosed and 19 which are open at the outerside.

. Similarly in Fig. 12 the plate at one side is bent to form protecting ribs a, diverging sides 14a and converging sides 13a; while the sheet at the other side is bent similarly to that of Fig. 11 to form transverse plates 16 connected in plates 17 In Fig. 13 on one side the sheet is bent to form outer protecting ribs 20 and outer Walls 21. which are flat and extend longitudinally and from the edges of which transverse inwardly converging walls 22 forni the inward corrugations. Thevvalls 22 are connected in pairs at their inner edges by the portions2 which are bent out at lintervals to embrace the pipe as in the previously described con structions. The other wall is made of a sheet pairs by the outer longitudinal fla-f) bent to form transverse sides 16 connected by longitudinal sides 17 as in the previous figures.

Fig. 14 illustrates a construction in which the shallower and wider corrugations at one side are made of a design shown in my copending application, Serial No. 345,985, filed March 11th, 1929. A sheet is bent to torni transverse walls 23 and the outer wall of cach closed flue is bent deeply inward as at 241 to 'form supplementary corrugations adding considerable stiffness to the structure in the. lateral direction. The corrugations at the opposite sides are of the deep type previously described with transverse portions 16 connected in pairs by longitudinal portions 17. These corrugations also may be considerably varied from the speciiic cases illustrated, and the same is true of the deeper corrugations shown in the other figures, 11, 12 and 13. They may for example be made of the saine general type as the corrugaticns shown at the lower sides of these iigures but of different depth or diiierent width there- Afrom.

Various other modifications may be made by those skilled in the art without departure from the invention as defined in the following claims.

What I claim is:

1. A radiator including in combination a heating element and an extended area structure united thereto consisting of thin sheet metal corrugated in horizontal section, the outer faces oi the corrugations having a certain total width and having outwardly projecting portions of less than the full width of such Jfaces.

2. A radiator including in combination a heating element and an extended area structure united thereto consisting of thin sheet met-al corrugated in horizontal section, each outward corrugation having an outer portion which is wider than the central portion so as to permit an easy vlow of air in contact therewith in the enclosed space.

3. A radiator including in combination a heating element and an extended area structure united thereto and corrugated in hori- Zontal section, the corrugations being in engagement with the heating elements at opposite laterally registering points and the corrugations at one side of the heating element being deeper than those at the other.

4. A radiator including in combination a heating element and an extended area structure united thereto and corrugated in hori- Zontal section, the corrugations being in engagement with the heating elements at opposite laterally registering points and the corrugations at one side being narrower than those at the other.

5. A radiator including in combination a heating element and an extended area structure united thereto and corrugated in horizontal section, the corrugations at both sides having the saine length of engagement tothe heating elementlbut those atfone side beingv deeper than those at the other.

6.` A `radiator including incombination a heating element and an extended area structure consisting of corrugated sheet metal applied to the opposite sides of the heating element, the corrugations at one side having outer portions which are of greater width than the spaces between them and the corrugations at the other side having outer portions which are narrower than those of the iirstmentioned side.

7 A radiator including in combination a heating element and an extended area structure consisting of corrugated sheet meta'lapplied to the opposite sides of the heating element, the corrugations at one side having outer portions which are wide and flat and extend longitudinally of the radiator and are separated by comparatively narrow spaces and the corrugations of the other side having their outer portions of less width and greater spacing. i

8. A radiator including in combination a heating element and an extended area structure consisting of corrugated sheet metal applied to the opposite sides of the heating element, the corrugations at one` side having outer portions which are wide and flat, with narrow vertical projecting ri-bs along the center and which are separated by spaces of less width, and the corrugations at the other side having their outer portions of less width and greater spacing than those of the first mentioned side.

9. A radiator for heating: the air of a room including in combination a heating element and an extended area structure united thereto consisting of thin sheet metal corrugated in'horizontal section, the sides of each outward corrugation converging toward the heating element and the outer portions of the corrugations forming a generally flat vertical face of the radiator, the inner portions of the corrugations engaging the heating element at separated points in its length, leaving between them substantial portions of the heating element exposed so as to forni with the outer corrugations Hue walls for heating the air by Contact therewith and for causing an upward draft and circulation thereof.

10. A radiator for heating the air of a room including in combination a heating element and an extended area structure united thereto consisting of thin sheet metal corrugated in horizontal section, the sides of each outward corrugation converging toward the heating element and the outer portions of the corrugations forming a generally iat vertical face of the radiator,the inner portions of lthe corrugations engaging the heating element at separated points in its length, leaving between them substantial portions of the heating element exposed so as to form with the outerv corrugations lue walls for heating the air by contact therewith and for causing an upward draft and circulation thereof, the outward portions of the successive corrugations being closely adjacent to one another so as to form an outer face which is substantially continuous in the lengthwise direction.

l1. A radiator for heating the air of a room including in combination a heating element and an extended area structure united thereto consisting of thin sheet metal corrugated irl-horizontal sections, the inner portions of the corrugations engaging the heating element at separatedzpoints in its length. leaving between them substantial portions of the heating element exposed so as to form with the outer 'corrugations flue walls for heating the air by Contact therewith and for causing an upward draft and circulation thereof, Veach outward corrugation having a point of maximum width from which the sides converge toward the heating element and also toward the outer face of the structure.

12. A radiator for heatingthe air of a room including in combination a heating element and an extended area structure united thereto consisting of thin sheet metal corrugated in horizontal section, the sides of each outward corrugation converging toward the heating element and the outer portions of the corrugations forming a generally flat Vertical face of the radiator, the inner portions of the corrugations engaging the heating element at separated points in its length, leaving between them substantial portions ot the heating element exposed so as to form with the outer corrugations flue walls for heating the air by Contact therewith and for causing an. upward draft andv circulation thereof, said extended area structure being arranged at the front and back of the heating element and the spaces between adjacent outward corrugations being narrower in the extended area structure at the front than in that at the back.

In witness whereof, I have hereunto signed my name.

THOMAS E. MURRAY, Jn. 

